Release for an electrical switching arrangement

Abstract

A selective release with a moving element is disclosed. The moving element is here mounted such that the moving element, in addition to the motion about its swivel axis, is guided in its motion by way of a brace. As a result of this, the moving element is mounted such that the trajectory of the blocking element essentially runs in a plane which extends transversely to the direction of flow of the flow channel.

What is claimed is: 
     
       1. A release for an electrical switching arrangement, arranged over a course of a current path, the electrical switching arrangement including at least two switching contacts arranged in a housing, the at least two switching contacts being isolated upon a current flowing across the at least two switching contacts exceeding a threshold value, the release comprising:
 an actuating element configured to,
 respond, counter to a force of a restraining apparatus, to a gas pressure generated by an electric arc struck in an event of an electrodynamic recoil of the at least two switching contacts in an isolating zone of the at least two switching contacts, the isolating zone being surrounded by the housing, and 
 actuate a shutdown mechanism effecting automatic interruption of the current path, the actuating element including,
 a moving element with a swivel axis, the moving element including a blocking element in a flow channel connected to the isolating zone, the blocking element being configured to perform a control movement in the presence of the pressure to result in disconnection, the moving element, being guided by way of a brace, the moving element being mounted such that a trajectory of the blocking element essentially runs in a plane that extends transversely to a direction of gas flow in the flow channel. 
 
 
 
     
     
       2. The release of  claim 1 , wherein the brace is designed to be rod-shaped. 
     
     
       3. The release of  claim 1 , wherein a first end of the brace is attached to the housing and a second end of the brace is attached to the moving element. 
     
     
       4. The release of  claim 3 , wherein the first end of the brace is mounted on a part of the housing which is located in the direction of gas flow in the flow channel behind the moving element. 
     
     
       5. An electrical switching arrangement comprising:
 at least two switching contacts arranged in a housing, the at least two switching contacts being arranged over a course of a current path and being isolated upon a current flowing across the at least two switching contacts exceeding a threshold value; and 
 the release of  claim 1 , configured to interrupt the first current path. 
 
     
     
       6. The release of  claim 2 , wherein a first end of the brace is attached to the housing and a second end of the brace is attached to the moving element. 
     
     
       7. The release of  claim 6 , wherein the first end of the brace is mounted on a part of the housing which is located in the direction of gas flow in the flow channel behind the moving element. 
     
     
       8. An electrical switching arrangement comprising:
 at least two switching contacts arranged in a housing, the at least two switching contacts being arranged over a course of a current path and being isolated upon a current flowing across the at least two switching contacts exceeding a threshold value; and 
 the release of  claim 2 , configured to interrupt the current path. 
 
     
     
       9. An electrical switching arrangement comprising:
 at least two switching contacts arranged in a housing, the at least two switching contacts being arranged over a course of a current path and being isolated upon a current flowing across the at least two switching contacts exceeding a threshold value; and 
 the release of  claim 3 , configured to interrupt the current path. 
 
     
     
       10. An electrical switching arrangement comprising:
 at least two switching contacts arranged in a housing, the at least two switching contacts being arranged over a course of a current path and being isolated upon a current flowing across the at least two switching contacts exceeding a threshold value; and 
 the release of  claim 4 , configured to interrupt the current path. 
 
     
     
       11. An electrical switching arrangement comprising:
 at least two switching contacts arranged in a housing, the at least two switching contacts being arranged over a course of a current path and being isolated upon a current flowing across the at least two switching contacts exceeding a threshold value; and 
 the release of  claim 6 , configured to interrupt the first-current path. 
 
     
     
       12. An electrical switching arrangement comprising;
 at least two switching contacts arranged in a housing, the at least two switching contacts being arranged over a course of a current path and being isolated upon a current flowing across the at least two switching contacts exceeding a threshold value; and 
 the release of  claim 7 , configured to interrupt the current path.